US4106026A - Corrugated horn with a low standing wave ratio - Google Patents

Corrugated horn with a low standing wave ratio Download PDF

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Publication number
US4106026A
US4106026A US05/737,795 US73779576A US4106026A US 4106026 A US4106026 A US 4106026A US 73779576 A US73779576 A US 73779576A US 4106026 A US4106026 A US 4106026A
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US
United States
Prior art keywords
horn
corrugations
mouth
throat
towards
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Expired - Lifetime
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US05/737,795
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English (en)
Inventor
Nhu Bui-Hai
Alain Bourgeois
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Thales SA
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Thomson CSF SA
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Publication date
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/02—Waveguide horns
    • H01Q13/0208—Corrugated horns

Definitions

  • This invention relates to corrugated horns with symmetry of revolution, of the type used in the hyperfrequency field as antennae or as primary sources of antennae.
  • the radiation diagrams of such horns have a symmetry of revolution.
  • Known horns of this type are conical horns.
  • the depth of the corrugations is constant, generally equal to about ⁇ /4 ( ⁇ , operational wavelength of the horn), the width of the corrugation is about ⁇ /10 and the length of the smooth part (i.e. the part without corrugations) is, in order to facilitate the matching of the horn, about one ⁇ .
  • corrugations improve the symmetry of the radiation diagram and reduce the secondary lobes.
  • those known horns have a comparatively high stationary wave ratio.
  • the object of the present invention is to overcome this drawback while preserving the symmetry of revolution of the radiation diagram and a low level of the secondary lobes.
  • horns of the exponential type i.e. horns the cross-sectional area of which increases exponentially with axial distance.
  • a corrugated horn of the exponential type wherein the depth of the corrugations decreases exponentially from the throat of the horn towards its mouth.
  • FIG. 1 is a section through a horn according to the invention.
  • FIG. 2 is a diagram relating to the horn shown in FIG. 1.
  • FIGS. 3 and 4 are sections through other horns according to the invention.
  • FIG. 1 is a longitudinal section through a corrugated horn, 1, of the exponential type, which has symmetry of revolution and, hence, a circular cross-section. From its throat 10 towards its mouth 11, this horn comprises:
  • connection flange 12 A connection flange 12,
  • This horn which has been designed to operate in the band from 6.43 to 7.11 GHz, has a length of 140 mm, an aperture diameter of 100 mm and a diameter of 34 mm at the narrowest point of its throat.
  • the smooth part 13 of this horn has a length of approximately 40 mm which substantially corresponds to the mean operational wavegength ⁇ of the horn.
  • the corrugations of the part 14 all have a width of 5 mm and the thickness of the wall between two consecutive corrugations is 2 mm.
  • the depth of these corrugations decreases exponentially from the throat of the horn towards its mouth.
  • the corrugation closest to the throat of the horn has a depth of 23 mm, i.e. approximately ⁇ /2, whilst the corrugation closest to the mouth of the horn has a depth of 11.5 mm, i.e. approximately ⁇ /4.
  • the stationary wave ratio is greatly reduced without the symmetry of revolution of the principal lobe being affected, whilst the level of the secondary lobes is kept below -40 dB relative to the maximum level of the principal lobe.
  • FIG. 2 shows how the stationary weve ratio R of the horn shown in FIG. 1 varies in dependence upon the operational frequency F expressed in gigahertz. Thus, for a band of 10% centred on 6.75 GHz, the stationary wave ratio is below 1.06.
  • the aperture angle of the antenna shown in FIG. 1 is:
  • FIGS. 3 and 4 are longitudinal sections through two other corrugated horns of the exponential type, with symmetry of revolution; these horns have an overall length of 200 mm and are intended to operate in the band from 6.43 to 7.11 GHz.
  • the horn 2 shown in FIG. 3 comprises a smooth part 21 and a part 20 with twelve transverse corrugations.
  • the depth of these corrugations decreases exponentially from ⁇ /2 to ⁇ /4 (where ⁇ is a length corresponding to the mean operational frequency of the horn) from the smooth part 21 towards the mouth 22 of the horn, and the thickness of the walls between consecutive corrugations is constant, i.e. is the same irrespective of the corrugations in question.
  • the width of the corrugations is not the same from one corrugation to the following corrugation. It increases exponentially from the smooth section 21 towards the mouth 22. This exponential variation of the width of the corrugations, in conjunction with the exponential variation of their depth, contributes towards providing this horn with a very low stationary wave ratio.
  • the horn 3 shown in FIG. 4 comprises a smooth part 31 and a part 30 with eleven transverse corrugations.
  • the depth of these corrugations decreases exponentially from ⁇ /2 to ⁇ /4 from the smooth part 31 towards the mouth 32 of the horn, and all the corrugations have the same width.
  • the thickness of the walls separating two consecutive corrugations is not constant: it increases exponentially from the smooth part 31 towards the mouth 32. This exponential variation of the thickness of the walls between the corrugations, in conjunction with the exponential variation of the depth of these corrugations, also contributes towards providing the horn with a low stationary wave ratio.
  • the width of the corrugations may also decrease exponentially from the smooth section of the horn towards its mouth, as may the thickness of the walls between the corrugations.
  • the variations in the thickness of corrugations and in the width of the walls between the corrugations may be combined in one and the same horn.

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  • Waveguide Aerials (AREA)
  • Catalysts (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Waveguides (AREA)
US05/737,795 1975-11-04 1976-11-01 Corrugated horn with a low standing wave ratio Expired - Lifetime US4106026A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7533698 1975-11-04
FR7533698A FR2331165A1 (fr) 1975-11-04 1975-11-04 Cornet exponentiel et antenne comportant un tel cornet

Publications (1)

Publication Number Publication Date
US4106026A true US4106026A (en) 1978-08-08

Family

ID=9162008

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/737,795 Expired - Lifetime US4106026A (en) 1975-11-04 1976-11-01 Corrugated horn with a low standing wave ratio

Country Status (7)

Country Link
US (1) US4106026A (enExample)
JP (1) JPS5258344A (enExample)
DE (1) DE2650388C2 (enExample)
FR (1) FR2331165A1 (enExample)
GB (1) GB1506100A (enExample)
IT (1) IT1074746B (enExample)
NO (1) NO145324C (enExample)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4231042A (en) * 1979-08-22 1980-10-28 Bell Telephone Laboratories, Incorporated Hybrid mode waveguide and feedhorn antennas
US4246584A (en) * 1979-08-22 1981-01-20 Bell Telephone Laboratories, Incorporated Hybrid mode waveguide or feedhorn antenna
US4295142A (en) * 1979-07-30 1981-10-13 Siemens Aktiengesellschaft Corrugated horn radiator
US4533919A (en) * 1983-10-14 1985-08-06 At&T Bell Laboratories Corrugated antenna feed arrangement
US5182569A (en) * 1988-09-23 1993-01-26 Alcatel N.V. Antenna having a circularly symmetrical reflector
WO2003100907A1 (es) * 2002-05-24 2003-12-04 Universidad Publica De Navarra Antena de bocina que combina corrugaciones horizontales y verticales
EP2584652A1 (en) 2011-10-21 2013-04-24 Siemens Aktiengesellschaft Horn antenna for a radar device
CN103066392A (zh) * 2013-01-22 2013-04-24 上海航天测控通信研究所 一种毫米波段的多模波纹喇叭
CN106981714A (zh) * 2015-11-13 2017-07-25 Vega格里沙贝两合公司 喇叭天线
US11289816B2 (en) * 2017-02-28 2022-03-29 Toyota Motor Europe Helically corrugated horn antenna and helically corrugated waveguide system

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2455803A1 (fr) * 1979-05-04 1980-11-28 Thomson Csf Cornet a rainures de differentes profondeurs et antenne comportant un tel cornet
DE3109667A1 (de) * 1981-03-13 1982-09-23 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt "breitbandiger rillenhornstrahler"
US4477816A (en) * 1982-07-14 1984-10-16 International Telephone & Telegraph Corporation Corrugated antenna feed horn with means for radiation pattern control
CH660650A5 (de) * 1983-02-25 1987-05-15 Siemens Ag Albis Rillenhornstrahler.
IT1180685B (it) * 1984-03-02 1987-09-23 Selenia Spazio Spa Sfasatore differenziale operante in larga banda di frequenza con sfasamento differenziale costante

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2985879A (en) * 1958-07-09 1961-05-23 Univ Illinois Frequency independent antennas
US3754273A (en) * 1970-10-24 1973-08-21 Mitsubishi Electric Corp Corrugated waveguide
US3949406A (en) * 1974-03-08 1976-04-06 Compagnie Industrielle Des Telecommunications Cit-Alcatel Horn for radioelectric antennas
US4012743A (en) * 1975-02-08 1977-03-15 Licentia Patent-Verwaltungs-G.M.B.H. Antenna system including a paraboloidal reflector and an exciter

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1269950A (en) * 1968-11-15 1972-04-06 Plessey Co Ltd Improvements in or relating to antenna feed systems

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2985879A (en) * 1958-07-09 1961-05-23 Univ Illinois Frequency independent antennas
US3754273A (en) * 1970-10-24 1973-08-21 Mitsubishi Electric Corp Corrugated waveguide
US3949406A (en) * 1974-03-08 1976-04-06 Compagnie Industrielle Des Telecommunications Cit-Alcatel Horn for radioelectric antennas
US4012743A (en) * 1975-02-08 1977-03-15 Licentia Patent-Verwaltungs-G.M.B.H. Antenna system including a paraboloidal reflector and an exciter

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4295142A (en) * 1979-07-30 1981-10-13 Siemens Aktiengesellschaft Corrugated horn radiator
US4231042A (en) * 1979-08-22 1980-10-28 Bell Telephone Laboratories, Incorporated Hybrid mode waveguide and feedhorn antennas
US4246584A (en) * 1979-08-22 1981-01-20 Bell Telephone Laboratories, Incorporated Hybrid mode waveguide or feedhorn antenna
US4533919A (en) * 1983-10-14 1985-08-06 At&T Bell Laboratories Corrugated antenna feed arrangement
US5182569A (en) * 1988-09-23 1993-01-26 Alcatel N.V. Antenna having a circularly symmetrical reflector
US20060044202A1 (en) * 2002-05-24 2006-03-02 Universidad Pubica De Navarra Horn antenna combining horizontal and vertical ridges
ES2204288A1 (es) * 2002-05-24 2004-04-16 Universidad Publica De Navarra. Antena de bocina que combina corrugaciones horizontales y verticales.
ES2204288B1 (es) * 2002-05-24 2005-07-16 Universidad Publica De Navarra. Antena de bocina que combina corrugaciones horizontales y verticales.
WO2003100907A1 (es) * 2002-05-24 2003-12-04 Universidad Publica De Navarra Antena de bocina que combina corrugaciones horizontales y verticales
US7091923B2 (en) 2002-05-24 2006-08-15 Universidad Publica De Navarra Horn antenna combining horizontal and vertical ridges
EP2584652A1 (en) 2011-10-21 2013-04-24 Siemens Aktiengesellschaft Horn antenna for a radar device
CN103066391A (zh) * 2011-10-21 2013-04-24 西门子公司 用于雷达装置的喇叭天线
US8890759B2 (en) 2011-10-21 2014-11-18 Siemens Aktiengesellschaft Horn antenna for a radar device
CN103066391B (zh) * 2011-10-21 2015-03-25 西门子公司 用于雷达装置的喇叭天线
CN103066392A (zh) * 2013-01-22 2013-04-24 上海航天测控通信研究所 一种毫米波段的多模波纹喇叭
CN103066392B (zh) * 2013-01-22 2015-11-11 上海航天测控通信研究所 一种毫米波段的多模波纹喇叭
CN106981714A (zh) * 2015-11-13 2017-07-25 Vega格里沙贝两合公司 喇叭天线
US11289816B2 (en) * 2017-02-28 2022-03-29 Toyota Motor Europe Helically corrugated horn antenna and helically corrugated waveguide system

Also Published As

Publication number Publication date
DE2650388C2 (de) 1982-10-28
NO145324C (no) 1982-02-24
JPS5258344A (en) 1977-05-13
FR2331165B1 (enExample) 1980-09-05
IT1074746B (it) 1985-04-20
NO145324B (no) 1981-11-16
NO763737L (enExample) 1977-05-05
FR2331165A1 (fr) 1977-06-03
DE2650388A1 (de) 1977-05-05
GB1506100A (en) 1978-04-05

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